A flushing system, a toilet and a flushing method

Abstract

A flushing system, a toilet and a flushing method, the flushing system comprising a switching valve, the switching valve being provided with a floating valve core and being configured to control opening and closing of a first water outlet and a second water outlet based on a differential pressure change of water pressure entering a first water inlet and a second water inlet of the switching valve to switch a working state of the flushing system.

Description

TECHNICAL FIELD

[0001] The present application relates to the toilet technology, in particular to a flushing system, a toilet and a flushing method. BACKGROUND

[0002] At present, the intelligent toilet with a water pump flushing system is favored by more and more consumers due to its stable flushing performance. The flushing performance can meet the flushing under the high water pressure condition of the water supply pipeline and is not affected by the water pressure fluctuation of the water supply pipeline under the low pressure condition. Under normal working condition, it is a relatively ideal flushing mode.

[0003] However, the flushing system has some disadvantages, of which the most prominent one is high manufacturing and maintenance cost. SUMMARY

[0004] The present application provides a flushing system, a toilet and a flushing method, which can reduce the manufacturing and maintenance cost.

[0005] The present application provides a flushing system, comprising:

[0006] A first water supply pipeline and a second water supply pipeline, the second water supply pipeline being provided with a pressure boosting device;

[0007] A control device, electrically connected with the pressure boosting device, configured to control the working state of the pressure boosting device;

[0008] A brush circle water pipeline and a first jet water pipeline, the water outlet end of the brush circle water pipeline being configured to be connected with the brush circle interface of the toilet, and the water outlet end of the first jet water pipeline being configured to be connected with the siphon jet port of the toilet;

[0009] A switching valve, comprising a first water inlet and a second water inlet connected with the water outlet ends of the first water supply pipeline and the second water supply pipeline respectively, and a first water outlet and a second water outlet connected with the water inlet ends of the brush circle water pipeline and the first jet water pipeline respectively;

[0010] The switching valve is provided with a floating valve core, configured to control the opening and closing of the first water outlet and the second water outlet based on the change of the water pressure difference between the first water inlet and the second water inlet to switch the working state of the flushing system.

[0011] In an exemplary embodiment, the switching valve comprises a valve body, a valve cavity provided in the valve body, and the first water inlet and the second water inlet, and the first water outlet and the second water outlet are all communicated with the valve cavity;

[0012] The floating valve core is arranged in the valve cavity, and the floating valve core comprises a first working position for connecting the second water inlet with the first water outlet and blocking the second water inlet and the second water outlet, and a second working position for connecting the second water inlet with the second water outlet and connecting the first water inlet with the first water outlet.

[0013] The floating valve core is arranged to be movable in the valve cavity based on a change in the water pressure difference between the first water inlet and the second water inlet to switch between the first working position and the second working position.

[0014] In an example embodiment, when the water pressure of the second inlet of the switching valve is greater than the water pressure of the first water inlet, the switching valve is switched to the first working position; when the water pressure of the second inlet is equal to or less than the water pressure of the first water supply channel, the switching valve is switched to the second working position.

[0015] In an example embodiment, the control device is arranged to control the duty ratio of the pressure increasing device to control the water pressure difference between the second water inlet and the first water inlet.

[0016] When the control device controls the duty ratio of the pressure increasing device to be a first duty ratio, the water pressure of the second water supply channel is greater than the water pressure of the first water supply channel, so that the water pressure of the second inlet is greater than the water pressure of the first water inlet.

[0017] When the control device controls the duty ratio of the pressure increasing device to be a second duty ratio less than the first duty ratio, the water pressure of the second water supply channel is equal to or less than the water pressure of the first water supply channel, so that the water pressure of the second inlet is equal to or less than the water pressure of the first water supply channel.

[0018] In an example embodiment, the opening directions of the first water inlet and the second water inlet of the switching valve are arranged oppositely, and the first water outlet and the second water outlet are arranged in a direction in which the first water inlet points to the second water inlet.

[0019] The floating valve core has a separation portion for separating the valve cavity and forming a first chamber and a second chamber, and a stop portion for blocking the second water outlet, the first chamber being in communication with the first water inlet, and the second chamber being in communication with the second water inlet.

[0020] When the floating valve core is in the first working position, the second water inlet is in communication with the first water outlet through the second chamber, and the stop portion blocks the second water outlet.

[0021] When the floating valve core is in the second working position, the second water inlet communicates with the second water outlet through the second chamber, and the first water inlet communicates with the first water outlet through the first chamber.

[0022] In one exemplary embodiment, the cross-sectional area of the first water outlet is smaller than that of the second water outlet.

[0023] In one exemplary embodiment, the flushing system further comprises a reset element providing a force for moving the floating valve core towards the second water inlet, one end of the reset element abutting against the floating valve core and the other end abutting against the inner wall surface of the valve chamber.

[0024] In one exemplary embodiment, when the water pressure of the first water supply path is lower than a predetermined value, the flushing system comprises the following multiple states:

[0025] First working state: the control device controls the second water supply path to supply water and the booster device to operate, for first circle cleaning;

[0026] Second working state: after the first circle cleaning, the control device controls the first water supply path and the second water supply path to supply water and controls the booster device to operate, for circle and jet combined cleaning;

[0027] Third working state: after the circle and jet combined cleaning, the control device controls the second water supply path to supply water and controls the booster device to operate, for second circle cleaning;

[0028] In the first working state and the third working state, the switching valve switches to the first working position; in the second working state, the switching valve switches to the second working position.

[0029] In one exemplary embodiment, when the water pressure of the first water supply path is higher than or equal to a predetermined value, the flushing system comprises the following multiple working states:

[0030] Fourth working state: the control device controls the first water supply path to supply water and the booster device to close, for first circle cleaning;

[0031] Fifth working state: after the first circle cleaning, the control device controls the first water supply path and the second water supply path to supply water and controls the booster device to operate, for circle and jet combined cleaning;

[0032] Sixth working state: after the circle and jet combined cleaning, the control device controls the first water supply path to supply water and controls the booster device to close, for second circle cleaning;

[0033] In the fourth working state to the sixth working state, the switching valve is switched to the second working position.

[0034] In an exemplary embodiment, the flushing system further comprises a second spray water path, and a control valve arranged in the first water supply path and used for controlling the opening and closing of the first water supply path; the control valve divides the first water supply path into a first water supply branch connected with a first water inlet connected with the water inlet end of the second spray water path and a second water supply branch connected with the water inlet end of the switching valve.

[0035] When power failure occurs, the flushing system comprises a plurality of working states as follows: a seventh working state, the control device controls the second water supply branch to supply water, and performs first circle cleaning;

[0036] An eighth working state, after the first circle cleaning, the control device controls the first water supply branch to supply water, and performs spray cleaning;

[0037] A ninth working state, after the spray cleaning, the control device controls the second water supply branch to supply water, and performs second circle cleaning;

[0038] In the seventh working state and the ninth working state, the switching valve is switched to the second working position.

[0039] The embodiments of the present application further provide a toilet, comprising a toilet body with a circle cleaning interface and a siphon spray opening, and the flushing system according to any of the above embodiments.

[0040] In an exemplary embodiment, the toilet further comprises a water tank, the water inlet end of the first water supply path of the flushing system is arranged to be connected with a municipal water source, and the water inlet end of the second water supply path of the flushing system is connected with the water tank.

[0041] The embodiments of the present application further provide a flushing method of the flushing system according to any of the above embodiments, comprising: when it is detected that the water pressure of the first water supply path is lower than a predetermined value, performing a second operation and at least one of a first operation and a third operation:

[0042] The first operation: controlling the second water supply path to supply water and controlling the booster device to operate, adjusting the water pressure of the second water supply path to be greater than that of the first water supply path, switching the switching valve to the first working position, and performing first circle cleaning;

[0043] The second operation: after the first circle cleaning, controlling the first water supply path and the second water supply path to supply water and controlling the booster device to operate, adjusting the water pressure of the second water supply path to be less than or equal to that of the first water supply path, switching the switching valve to the second working position, and performing circle and spray combined cleaning;

[0044] Third operation: after the common washing of brushing and spraying, the second water supply channel is controlled to supply water and the booster device is controlled to operate, the water pressure of the second water supply channel is adjusted to be greater than the first water supply channel, the switching valve switches to the first working position, and the second brushing washing is performed.

[0045] In one example embodiment, the method comprises when the water pressure of the first water supply channel is higher than or equal to a predetermined value,

[0046] controlling the first water supply channel to supply water and controlling the booster device to be closed, the switching valve switches to the second working position, and the first brushing washing is performed;

[0047] After the first brushing washing, the second water supply channel is controlled to supply water and the booster device is controlled to operate, the first water supply channel is controlled to supply water, the water pressure of the second water supply channel is adjusted to be equal to or less than the water pressure of the first water supply channel, the switching valve switches to the second working position, and the common washing of brushing and spraying is performed;

[0048] After the common washing of brushing and spraying, the first water supply channel is controlled to supply water and the booster device is controlled to be closed, the switching valve switches to the second working position, and the second brushing washing is performed again.

[0049] Compared with the related art, the flushing system of the embodiment of the present application can switch between different water channels to switch the working state of the flushing system by setting the switching valve, which can change the pressure difference between the water pressures of the first water inlet and the second water inlet of the switching valve, avoiding the use of electromagnetic valves and motors, without the need for additional power supply, and the structure is simple, which can meet the water demand of the flushing water and the spraying water of the closestool while reducing the production and maintenance costs.

[0050] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the present application. Other advantages of the present application can be realized and obtained by the solutions described in the specification and the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0051] The accompanying drawings are used to provide an understanding of the technical solutions of the present application, and constitute a part of the specification, and together with the embodiments of the present application, are used to explain the technical solutions of the present application, and do not constitute a limitation on the technical solutions of the present application.

[0052] Figure 1 is a part of the closestool of the embodiment of the present application;

[0053] Figure 2 is a pipe connection diagram of the flushing system and the water tank of the embodiment of the present application;

[0054] Figure 3A perspective exploded view of a switching valve according to an embodiment of the present application;

[0055] Figure 4 An internal cross-sectional view of a switching valve according to an embodiment of the present application;

[0056] Figure 5 A first working position view of a switching valve according to an embodiment of the present application;

[0057] Figure 6 A second working position view of a switching valve according to an embodiment of the present application;

[0058] Figure 7 A first working position view of a switching valve according to an embodiment of the present application, with a reset element installed;

[0059] Figure 8 A second working position view of a switching valve according to an embodiment of the present application, with a reset element installed;

[0060] Figure 9 A flushing method control flowchart of a flushing system according to an embodiment of the present application.

[0061] Reference signs: a toilet 100; a toilet body 1; a water tank 2; a flushing system 3; a basin body 11; a first water supply waterway 31; a second water supply waterway 32; a rim waterway 33; a first jet waterway 34; a switching valve 35; a booster device 36; a second jet waterway 37; a control valve 38; a first water supply branch 311; a second water supply branch 312; a valve body 35a; a valve cavity 350; a first water inlet 351; a second water inlet 352; a first water outlet 353; a second water outlet 354; a floating valve core 355; a valve cavity 350; a separation portion 3551; a stop portion 3552; a first cavity 3501; a second cavity 3502; a reset element T; a first mounting portion 3553; a second mounting portion 3554; a first valve body 351a; a second valve body 352a; a rim jet 41 and a siphon jet 42; a first interface 421 and a second interface 422. DETAILED DESCRIPTION

[0062] As shown in Figures 1-8 , the present application provides a toilet 100, which includes a toilet body 1, a water tank 2, and a flushing system 3. The toilet 100 can be used for a jet siphon type intelligent toilet, and can be a floor type or a wall-hung type. The present embodiment is described in detail with respect to a floor type toilet 100.

[0063] As shown in Figure 1As shown, the toilet body 1 comprises a basin 11 and a sewage passage (not shown) connected with the basin 11, which is used to connect with a sewerage system. The basin 11 comprises a water seal area (not shown) connected with the sewage passage, which is used to store a certain height of water column to resist the change of air pressure difference in the sewage passage and prevent the gas in the sewage passage from entering the room.

[0064] The toilet body 1 is provided with a brush ring interface (not shown) connected with the basin 11 and a siphon injection port (not shown) located at the lower part of the basin 11 at the position of the water seal area. The water tank 2 in the embodiment is designed in a separate manner from the toilet body 1, and in other embodiments, the water tank 2 can also be integrated into the toilet body 1, which is not limited herein.

[0065] As shown, Figure 2 The flushing system 3 of the embodiment comprises a first water supply waterway 31 and a second water supply waterway 32, a brush ring waterway 33 and a first injection waterway 34, and a switching valve 35.

[0066] The water inlet end of the first water supply waterway 31 is arranged to be connected with a municipal water source (tap water pipe), and the water inlet end of the second water supply waterway 32 is arranged to be connected with the water tank 2, and the second water supply waterway 32 is provided with a pressure boosting device 36, so as to realize two water supply modes of tap water supply and water tank 2 increased water supply, to provide multiple flushing modes.

[0067] The pressure boosting device 36 in the embodiment adopts a water pump, and of course, an air pump can also be adopted, which is not limited herein. The flushing system 3 further comprises a control device electrically connected with the pressure boosting device 36, which can control the opening and closing of the pressure boosting device 36.

[0068] The water outlet end of the brush ring waterway 33 is arranged to be connected with the brush ring interface of the toilet body 1 to provide brush ring flushing water of the toilet body 1. The water outlet end of the first injection waterway 34 is arranged to be connected with the siphon injection port of the toilet body 1 to provide a jet flow to generate a siphon effect for sewage. The switching valve 35 is connected with the water outlet ends of the first water supply waterway 31 and the second water supply waterway 32, and the water inlet ends of the brush ring waterway 33 and the first injection waterway 34, respectively.

[0069] As shown, Figures 3-8As shown, the switching valve 35 of the embodiment of the present application comprises a valve body 35a, a valve cavity 350 provided on the valve body 35a, a first water inlet 351 connected to the water outlet of the first water supply path 31 and a second water inlet 352 connected to the water outlet of the second water supply path 32, and a first water outlet 353 connected to the water inlet of the brush circle water path 33 and a second water outlet 354 connected to the water inlet of the first jet water path 34. The switching valve is provided with a floating valve core 355, which is arranged to be capable of controlling the opening and closing of the first water outlet 353 and the second water outlet 354 based on the pressure difference change of the water pressure entering the first water inlet 351 and the second water inlet 352 to switch the working state of the flushing system 3.

[0070] The floating valve core 355 is provided in the valve cavity 350, and the floating valve core 355 comprises a first working position (brush circle open, jet off) (see Fig. 2) in which the second water inlet 352 and the first water outlet 353 are communicated and the second water inlet 352 and the second water outlet 354 are blocked, and a second working position (brush circle open, jet open) (see Fig. 3) in which the second water inlet 352 and the second water outlet 354 are communicated and the first water inlet 351 and the first water outlet 353 are communicated. Figure 5 Figure 6 The floating valve core 355 is arranged to be capable of moving in the valve cavity 350 based on the water pressure difference change of the water pressure entering the first water inlet 351 and the second water inlet 352 to switch the first working position and the second working position, so as to realize the working state of the flushing system 35.

[0071] When the water pressure entering the second water inlet 352 is greater than the water pressure entering the first water inlet 351, the floating valve core 355 is switched to the first working position (brush circle open, jet off) under the action of the water flow of the second water inlet 351; when the water pressure entering the second water inlet 352 is less than or equal to the water pressure entering the first water inlet 351, the floating valve core 355 is switched to the second working position (brush circle open, jet open) under the joint action of the water flow of the first water inlet 351 and the second water inlet 352.

[0072] In one exemplary embodiment, the control device is arranged to control the duty ratio of the pressure boosting device 36 to control the water pressure difference between the second water inlet 352 and the first water inlet 351;

[0073] When the control device controls the duty ratio of the pressure boosting device 36 to be a first duty ratio, the water pressure of the second water supply path 32 is greater than the water pressure of the first water supply path 31, so that the water pressure entering the second water inlet 352 is greater than the water pressure entering the first water inlet 351;

[0074] When the control device controls the duty ratio of the pressure boosting device to be a second duty ratio less than the first duty ratio, the water pressure of the second water supply path 32 is equal to or less than the water pressure of the first water supply path 31, so that the water pressure entering the second water inlet 352 is less than or equal to the water pressure entering the first water inlet 351.​

[0075] like Figure 4 As shown, the opening directions of the first inlet 351 and the second inlet 352 of the switching valve 35 are opposite to each other, so that the water flow directions of the first inlet 351 and the second inlet 352 are opposite, thereby driving the floating valve core 355 to reciprocate in opposite directions under the change of pressure difference. The first outlet 353 and the second outlet 354 are arranged in the direction from the first inlet 351 to the second inlet 352, and the second outlet 354 is closer to the second inlet 352 than the first outlet 353.

[0076] like Figures 4-6 As shown, the floating valve core 355 has a partition portion 3551 that divides the valve chamber 350 and forms a first chamber 3501 communicating with the first inlet 351 and a second chamber 3502 communicating with the second inlet 352, and a stop portion 3552 that can block the second outlet 352. When the floating valve core 355 is in the first working position, the second inlet 351 is connected to the first outlet 251 through the second chamber 3502, and the stop portion blocks the second outlet 354; when the floating valve core 355 is in the second working position, the second inlet 352 is connected to the second outlet 354 through the second chamber 3502, and the first inlet 351 is connected to the first outlet 353 through the first chamber 3501, and the first chamber 3501 and the second chamber 3502 are not interconnected. The design of the floating valve core 355 ensures that both the first outlet 353 and the second outlet 354 have a certain flow rate when water is discharged simultaneously.

[0077] The floating valve core 355 in this embodiment is an inner shell disposed in the valve cavity 350. The inner shell has a water flow channel inside, the top of the shell serves as a partition 3551, the shell body serves as a stop 3552, and an orifice 3550 is provided to switch the communication relationship with the first water outlet 353 and the second water outlet 354.

[0078] The cross-sectional area of ​​the first outlet 353 of the switching valve 35 is smaller than that of the second outlet 354, thus making the water flow rate of the first outlet 353 less than that of the second outlet 354. This satisfies the requirements of different water flow rates in different water circuits and expands its adaptability. In particular, it meets the different water flow requirements of the brush ring water circuit 33 and the jet water circuit 34 during the flushing process of the toilet 100.

[0079] The switching valve 36 of this application embodiment can switch between different water paths based on the water pressure changes of the first water inlet 351 and the second water inlet 352, thereby achieving the purpose of switching the working state of the flushing system. This avoids the use of solenoid valves and motors, eliminates the need for additional power supply, and has a simple structure. It meets the water demand of the toilet 1 for jet water and brush ring water while reducing production and maintenance costs.

[0080] As shown in Figure 3 , Figures 7-8 , the switching valve 35 further comprises a reset element T providing a force for moving the floating valve core 355 towards the direction of the second water inlet 352, one end of the reset element T abutting against the floating valve core 355, and the other end abutting against the inner wall surface of the valve cavity 350. The floating valve core 355 is provided with a first mounting portion 3553, and the inner wall of the valve cavity 350 is provided with a second mounting portion 3554, and the two ends of the reset element 60 are respectively mounted on the first mounting portion 3553 and the second mounting portion 3554, so as to prevent displacement of the reset element 60 during compression and ensure normal use. In the embodiment, the reset element 60 is a reset spring.

[0081] As shown in Figure 3 , the valve body 35a comprises a first valve body 351a and a second valve body 352a detachably assembled with the first valve body 351a, and the valve cavity 350 is formed by assembling the first valve body 351a and the second valve body 352a, so as to facilitate installation and replacement of the floating valve core 355 and the reset element T.

[0082] The flushing system 3 of the embodiment can provide multiple flushing modes according to the water pressure of the first water supply waterway 31. In one flushing mode, when it is detected that the water pressure of the first water supply waterway 31 is lower than a predetermined value, the flushing system 3 comprises the second working state and at least one of the first working state and the third working state:

[0083] The first working state is that the control device controls the second water supply waterway 32 to supply water and controls the booster device 36 to operate, and performs the first circle cleaning. Since the water pressure of tap water is low, the circle cleaning ability is low, and therefore the pressurized water provided by the second water supply waterway 32 is used for circle flushing, which can achieve a higher circle flushing effect. In this state, the switching valve 35 is switched to the first working position (circle open, jet off), the second water supply waterway 32 is communicated with the circle waterway 33, and the second water supply waterway 32 is disconnected with the first jet waterway 31.

[0084] The second working state is that after the first circle cleaning, the control device controls the first water supply waterway 31 and the second water supply waterway 32 to supply water and controls the booster device 36 to operate, and the system performs circle and jet cleaning. In the process of jet washing, the jet water flow is covered by the circle water, which can reduce the noise of the jet water impacting the toilet wall, and achieve the effect of silent flushing. In this state, the switching valve 35 is switched to the second working position (circle open, jet open), the first water supply waterway 31 is communicated with the circle waterway 33, and the second water supply waterway 32 is communicated with the first jet waterway 34.

[0085] The third working state is that after the common cleaning of the brushing circle and the spraying, and when the pressure of the second water supply channel 32 is greater than that of the first water supply channel 31, the control device controls the second water supply channel 32 to supply water and controls the pressure boosting device 36 to operate, and the brushing circle cleaning is performed again by the pressure boosting water, so as to improve the brushing circle cleaning effect. In this state, the switching valve 35 is switched to the first working position (the brushing circle is on, and the spraying is off), the second water supply channel 32 is connected with the brushing circle water channel 33, and the second water supply channel 32 is disconnected with the first spraying water channel 34.

[0086] The flushing system 3 of the embodiment of the application can start the second water supply channel 31 to perform the pressure boosting cleaning when the water pressure of the first water supply channel 31 is low, and the first water supply channel 31 still continues to supply the brushing circle water to reduce the noise generated by the flushing of the spraying water, so as to achieve the effect of silent flushing.

[0087] In another flushing mode, when the water pressure of the first water supply channel 31 is higher than or equal to a predetermined value, the flushing system includes the following multiple working states:

[0088] The fourth working state is that the control device controls the pressure boosting device 36 to be closed and the first water supply channel 31 to supply water, so as to perform the first brushing circle cleaning. In this state, the switching valve 35 is switched to the second working position (the brushing circle is on, and the spraying is on), the first water supply channel 31 is connected with the brushing circle water channel 33, and the second water supply channel 32 stops supplying water to the spraying water channel 34.

[0089] The fifth working state is that after the first brushing circle cleaning, the control device controls the first water supply channel 31 and the second water supply channel 32 to supply water and the pressure boosting device 36 to operate, so as to perform the common cleaning of the brushing circle and the spraying. In this state, the switching valve 35 is switched to the second working position (the brushing circle is on, and the spraying is on), the first water supply channel 31 is connected with the brushing circle water channel 33, and the second water supply channel 32 is connected with the spraying water channel 34.

[0090] The sixth working state is that after the common cleaning of the brushing circle and the spraying, the control device controls the pressure boosting device 36 to be closed, the second water supply channel 32 to stop supplying water, and the first water supply channel 31 to supply water, so as to perform the second brushing circle cleaning. In this state, the switching valve 35 is switched to the second working position (the brushing circle is on, and the spraying is on), the first water supply channel 31 is connected with the brushing circle water channel 33, and the second water supply channel 32 stops supplying water to the spraying water channel 33.

[0091] The flushing system 3 of the embodiment of the application can switch the flushing mode according to the water pressure of the first water supply channel 31, so that the flushing is more intelligent. Specifically, a detection element (not shown in the figure) can be arranged to detect the water pressure of the first water supply channel 31, the detection element is connected with the control device, and the switching of the flushing mode is realized according to the detection result.

[0092] The flushing system 3 controls the water pressure of the second water supply circuit 32 by controlling the duty cycle of the booster device 36 through the control device. The specific control is as follows:

[0093] In the first working state, the control device controls the duty cycle of the booster device 36 to the first duty cycle, so as to adjust the water pressure of the second water supply circuit 32 to be greater than the water pressure of the first water supply circuit 31. The floating valve core 355 switches to the first working position (brush ring open, spray closed) under the action of the water flow in the second water inlet 352.

[0094] In the second working state, the control device controls the duty cycle of the booster device 36 to a second duty cycle that is less than the first duty cycle, so as to adjust the water pressure of the second water supply circuit 32 to be equal to or less than the water pressure of the first water supply circuit 31. The floating valve core 355 switches to the second working position (brush ring open, jet open) under the combined action of the water flow from the first water inlet 31 and the second water inlet 32.

[0095] In the third operating state, the control device controls the duty cycle of the booster device 36 to a third duty cycle that is greater than the second duty cycle, and adjusts the water pressure of the second water supply circuit 32 to be greater than the water pressure of the first water supply circuit 31. Under the action of the water flow at the second inlet 32, the floating valve core 36 switches back to the first operating position. The third duty cycle may be the same as or different from the first duty cycle, and is not limited here.

[0096] In the fourth operating state, the control device controls the duty cycle of the booster device 36 to the fourth duty cycle, so as to adjust the water pressure of the second water supply circuit 32 to be equal to or less than the water pressure of the first water supply circuit 31. The floating valve core 355 switches to the second operating position (brush ring open, jet open) under the combined action of the water flow from the first inlet 351 and the second inlet 352. The fourth duty cycle can be the same as or different from the first duty cycle.

[0097] like Figure 2 As shown. The flushing system 35 also includes a second jet water path 37 and a control valve 38 located in the first water supply path 31 and used to control the on / off state of the first water supply path. The control valve 38 divides the first water supply path 31 into a first water supply branch 311 connected to the inlet of the second jet water path 37 and a second water supply branch 312 connected to the first inlet 351 of the switching valve 35. The control device is electrically connected to the control valve 38.

[0098] The booster device 36 is configured to connect to a municipal power supply. When the municipal power supply is unavailable, the flushing system 3 has a power-off flushing mode. The flushing system 3 includes the following operating states:

[0099] In the seventh working state, the control device controls the control valve 38 to open the second water supply branch 312 to supply water to the switching valve 35 for the first brush ring cleaning; in this working state, the switching valve 35 switches to the second working position (brush ring open, spray open) to connect the second water supply line 31 with the brush ring water line 33.

[0100] In the eighth working state, after the first brush ring cleaning, the control device controls the control valve 38 to open the first water supply branch 311 to supply water to the second jet water line 37 for siphon spray cleaning.

[0101] In the ninth working state, after siphon spray washing, the control device controls the control valve 38 to open the second water supply branch 312 to supply water to the switching valve 35 for another brush ring cleaning. In this working state, the switching valve 35 switches to the second working position (brush ring open, spray open) to connect the first water supply line 31 and the brush ring water line 33.

[0102] like Figure 2 As shown, the flushing system 35 also includes a brush ring nozzle 41 and a siphon jet 42. The brush ring nozzle 41 is located at the water outlet of the brush ring water passage 31 and is configured to mate with the brush ring interface of the toilet 1. The siphon jet 42 is configured to mate with the siphon jet outlet of the toilet 1 and has a first interface 421 and a second interface 422 that are respectively connected to the water outlet of the first jet water passage 34 and the water outlet of the second spray water passage 37.

[0103] When the flushing system 3 of this embodiment is working, the water pressure of the first water supply circuit 31 is detected by a pressure detection device (not shown) to determine the flushing mode. When the tap water pressure is insufficient, the booster device 36 is adjusted to operate at a certain duty cycle by the control device, so that the water pressure of the second water supply circuit 32 is greater than the water pressure of the first water supply circuit 31. At this time, the water flows into the switching valve 35 through the second inlet 352. Since the water pressure of the second inlet 352 is greater than the water pressure of the first inlet 351, the floating valve core 355 of the switching valve 35 switches to the first working position (brush ring open, jet closed) under the action of the water flow entering through the second inlet 352. The water flow boosted by the booster device 36 enters the brush ring water circuit 33 through the second inlet 352, the valve chamber 350, and the first outlet 353 to perform the first brush ring flush on the toilet 1.

[0104] When the first circle of flushing is completed, the control valve 38 opens the first water supply path 31, and the duty cycle of the pressure boosting device 36 is reduced, the tap water enters the valve cavity 350 from the first water inlet 351, and pushes the floating valve core 355 to switch to the second working position (brushing open, spraying open), and the tap water enters the brushing water path 33 from the first water inlet 351; After a period of time, the pressure boosting device 36 starts to run at a certain duty cycle, and the pressurized water flow enters the valve cavity 350 from the second water inlet 352, and enters the spraying water path 34 from the second water outlet 352, at this time the brushing water path 33 and the spraying water path 34 are supplied with water at the same time, and the air friction sound formed by the brushing water covering the spraying water flow is reduced to reduce the spraying noise.

[0105] After the brushing and siphon spraying are completed, the control valve 38 closes the first water supply path 31, and the pressure boosting device 36 runs at a low duty cycle, and the water flow enters the valve cavity 350 from the second water inlet 352, and pushes the floating valve core 355 to switch to the first working position (brushing open, spraying off), and the water flow enters the brushing water path 33 from the first water outlet 351.

[0106] When it is detected that the water pressure of the first water supply path 31 is equal to or higher than the predetermined value, the flushing system 35 adopts the second flushing mode for flushing: the control valve 38 opens the first water supply path 31, and the tap water enters, at this time the water flow enters the switching valve 35 from the first water inlet 351, and pushes the floating valve core 355 to switch to the second working position (brushing open, spraying off), and the tap water enters the brushing water path 33 from the first water outlet 351, and performs the first brushing cleaning.

[0107] When the first circle of flushing is completed, the control valve 38 keeps opening the first water supply path 31, and the pressure boosting device 36 starts to run, and the pressurized water enters the valve cavity 350 from the second water inlet 352, and enters the spraying water path 34 from the second water outlet 352. By adjusting the duty cycle of the pressure boosting device 36, the tap water continues to supply the brushing water path 33, and the air friction sound formed by the brushing water covering the spraying water flow is reduced to reduce the noise.

[0108] After the brushing and siphon spraying are completed, the pressure boosting device 36 stops running, and the control valve 38 opens the tap water to enter the switching valve 35 to supply the brushing water path 33 with water.

[0109] The detection unit of the flushing system of the embodiment can be integrated on the housing of the control valve 38 or on the control panel of the toilet body 1, and can detect the water pressure of the first water supply channel 31 and the second water supply channel 32. The detection unit detects the water pressure at the input end of the control valve 38 and sends it to the control device. When the control device determines that the water pressure at the input end of the control valve 38 is less than the working water pressure, for example, when the tap water pressure is too low, the control device can use the first flushing mode (silent zero water pressure flushing mode) by controlling the booster device 36. When the control device determines that the tap water pressure is not less than the working water pressure, the control device controls the control valve 38 to use the second flushing mode (normal silent flushing mode).

[0110] The flushing system of the embodiment can intelligently select a flushing mode according to the actual water pressure environment of the user, meet different flushing requirements, and improve the intelligence of the product.

[0111] It should be noted that the "first" and "second" described in the embodiments of the present application only represent the difference in the flushing order, and do not limit the number of flushing in each state. For example, one circle cleaning can be performed in the first state, or multiple circle cleanings can be performed.

[0112] As shown in Figure 9 The embodiments of the present application also provide a flushing method applied to the flushing system 3 of any of the above embodiments, which comprises:

[0113] S1, when it is detected that the water pressure of the first water supply channel 31 is lower than a predetermined value, at least one of S12 and S11 and S13 is performed:

[0114] S11, controlling the second water supply channel 32 to supply water and operating the booster device 36, adjusting the water pressure of the second water supply channel 32 to be greater than that of the first water supply channel 31, switching the switching valve 35 to the first working position (circle open, spray off), and performing first circle cleaning;

[0115] S12, after the first circle cleaning, controlling the second water supply channel 32 to supply water and operating the booster device 36, controlling the first water supply channel 31 to supply water, adjusting the water pressure of the second water supply channel 32 to be less than or equal to that of the first water supply channel 31, switching the switching valve 35 to the second working position (circle open, spray open), and performing circle and spray cleaning together;

[0116] S13, after the circle and spray cleaning together, controlling the second water supply channel 32 to supply water and operating the booster device 36, adjusting the water pressure of the second water supply channel 31 to be greater than that of the first water supply channel 31, switching the switching valve 35 to the first working position (circle open, spray off), and performing second circle cleaning.

[0117] The flushing method of the flushing system 3 further comprises: S2, when the water pressure of the first water supply channel 31 is detected to be higher than or equal to a predetermined value, performing the following operations:

[0118] S21, controlling the first water supply channel 31 to supply water and closing the pressure boosting device 36, switching the switching valve 36 to the second working position (brushing open, spraying open), and performing the first brushing cleaning;

[0119] S22, controlling the second water supply channel 32 to supply water and operating the pressure boosting device 36, controlling the first water supply channel 31 to supply water, adjusting the water pressure of the second water supply channel 32 to be less than or equal to the water pressure of the first water supply channel 31, and switching the switching valve 36 to the second working position (brushing open, spraying open), to perform the brushing and spraying combined cleaning;

[0120] S23, controlling the first water supply channel 31 to supply water and closing the pressure boosting device 36, switching the switching valve 31 to the second working position (brushing open, spraying open), and performing the second brushing cleaning.

[0121] The flushing system 3 of the embodiment can intelligently select a flushing mode according to an actual water pressure environment of a user, meet different flushing requirements, and improve the intelligence of the product.

[0122] The present application describes a plurality of embodiments, but the description is exemplary rather than limiting, and it is obvious to those skilled in the art that there can be more embodiments and implementation schemes within the scope of the embodiments described in the present application. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are also possible. Unless specifically limited, any feature or element of any embodiment can be used in combination with any other feature or element of any other embodiment, or can replace any other feature or element of any other embodiment.

[0123] The present application includes and contemplates combinations of features and elements known to those skilled in the art. The embodiments, features and elements disclosed in the present application can also be combined with any conventional features or elements to form a unique inventive scheme defined by the claims. Any feature or element of any embodiment can also be combined with features or elements from other inventive schemes to form another unique inventive scheme defined by the claims. Therefore, it should be understood that any feature shown and / or discussed in the present application can be implemented alone or in any appropriate combination. Therefore, the embodiments are not limited other than according to the limitations made according to the appended claims and their equivalent replacements. In addition, various modifications and changes can be made within the scope of protection of the appended claims.

[0124] Furthermore, in describing representative embodiments, the specification can have presented the method and / or process as a particular sequence of steps. However, to the extent that the method or process depends on the particular order of steps, this description should not be construed as limiting since other steps can be performed in other sequences and / or omitted from the method or process. For example, it is contemplated that the steps of the method and / or process can be performed in various orders, and / or omitted, without changing the spirit or scope of the method and / or process. Furthermore, words such as "thereafter," "then," "next," etc. are not necessarily used to denote order of steps, but rather are used to denote definition of boundaries between steps. It is further understood that various steps can be combined, and / or distributed, without changing the spirit or scope of the method and / or process. Accordingly, the particular order of steps in the specification should not be construed as limiting.

[0125] It will be understood by those within the art that, in some aspects of the disclosed method, system and apparatus, not all of the functions need be performed, and some of the functions can be carried out on a continuous basis, for example, by one or more programmable processor, such as one or more digital signal processors (DSPs), by one or more general purpose microprocessors, microcontrollers, microcomputers, etc. Where appropriate, the functions can be carried out by one or more ASIC, in part by one or more DSP, in part by one or more microprocessor, microcontroller, microcomputer, etc., or by other such as discrete elements or by one or more application specific integrated circuits (ASICs), or other integrated circuits. Various aspects of the disclosed method, system and apparatus are described in terms of sequences of actions to be performed by, and interaction with, various elements or components. It will be understood that such elements or components, can include either singly or in combination, software and / or hardware aspects. Furthermore, they can each correspond to or be based on the executable instructions of one or more computer programs, such as programs running to execute one or more software or firmware modules, unless explicitly described otherwise. In each such software module, an example of which is illustrated in Fig. 2, the software elements include the instructions for the hardware elements to function in the manner taught by the present disclosure. The software elements can be implemented in a structured language such as C or C++. Such software elements can also be implemented in hardwired logic or other hardware. Note that the software can reside on the hardware, for example, in the RAM of the processor, or in the processor cache or in another storage location. Likewise, the software elements can be downloaded into a computer from computer program product, which for example, can be in the form of a computer readable medium, such as a compact diskette or floppy disk, or can be in the form of a signal, such as a downloadable electronic signal, transmitted over the Internet or over other networks. Alternatively, the software elements can be in a memory received from a manufacturer when the hardware, such as a system on a chip, is manufactured. Alternatively, the software elements can be in a memory received when the hardware is updated, for example, when a system on a chip is updated.

[0126] In the description in the present application, it is necessary to point out that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "edge", "opposite", "four corners", "perimeter", "mouth structure" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the structure referred to has a particular orientation, is constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0127] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "connection", "direct connection", "indirect connection", "fixed connection", "installation", "assembly" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; the terms "installation", "connection", "fixed connection" can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0128] Although the embodiments disclosed in the present application are as described above, the content described is only the embodiments adopted for the convenience of understanding the present application, and is not intended to limit the present application. Any person skilled in the art can make any modification and change in the form and details without departing from the spirit and scope of the present application, but the patent protection scope of the present application shall be subject to the appended claims.

Claims

1. A flushing system, characterized in that, include: The first water supply line and the second water supply line are equipped with a booster device; A control device, electrically connected to the booster device, is configured to control the operating state of the booster device. The toilet includes a brush ring water path and a first jet water path, wherein the outlet of the brush ring water path is configured to connect to the brush ring interface of the toilet, and the outlet of the first jet water path is configured to connect to the siphon jet port of the toilet. The switching valve includes a first inlet and a second inlet connected to the outlets of the first water supply circuit and the second water supply circuit, respectively, and a first outlet and a second outlet connected to the inlets of the brush ring circuit and the first jet circuit, respectively. The switching valve is equipped with a floating valve core and is configured to control the opening and closing of the first and second water outlets based on the change in the water pressure difference between the first and second water inlets to switch the working state of the flushing system. The switching valve includes a valve body and a valve cavity disposed in the valve body. The first inlet and the second inlet, as well as the first outlet and the second outlet, are all connected to the valve cavity. The floating valve core is disposed in the valve cavity. The floating valve core includes a first working position that connects the second water inlet to the first water outlet and blocks the second water inlet and the second water outlet, and a second working position that connects the second water inlet to the second water outlet and connects the first water inlet and the first water outlet. The floating valve core is configured to move within the valve chamber based on changes in the water pressure difference entering the first and second inlets to switch between the first and second operating positions.

2. The flushing system according to claim 1, characterized in that, When the water pressure at the second inlet of the switching valve is greater than the water pressure at the first inlet, the switching valve switches to the first working position; when the water pressure at the second inlet is equal to or less than the water pressure in the first water supply circuit, the switching valve switches to the second working position.

3. The flushing system according to claim 2, characterized in that, The control device is configured to control the duty cycle of the booster device to control the water pressure difference between the second inlet and the first inlet; When the control device controls the duty cycle of the booster device to the first duty cycle, the water pressure of the second water supply circuit is greater than the water pressure of the first water supply circuit, so that the water pressure of the second inlet is greater than the water pressure of the first inlet. When the control device controls the duty cycle of the booster device to a second duty cycle that is less than the first duty cycle, the water pressure of the second water supply circuit is equal to or less than the water pressure of the first water supply circuit, so that the water pressure of the second inlet is equal to or less than the water pressure of the first water supply circuit.

4. The flushing system according to claim 1, characterized in that, The opening directions of the first inlet and the second inlet of the switching valve are opposite to each other, and the first outlet and the second outlet are arranged in the direction from the first inlet to the second inlet; The floating valve core has a partition portion that divides the valve cavity to form a first chamber and a second chamber, and a stop portion that can block the second outlet. The first chamber is connected to the first inlet, and the second chamber is connected to the second inlet. When the floating valve core is in the first working position, the second inlet is connected to the first outlet through the second chamber, and the stop portion blocks the second outlet. When the floating valve core is in the second working position, the second water inlet is connected to the second water outlet through the second chamber, and the first water inlet is connected to the first water outlet through the first chamber.

5. The flushing system according to claim 1, characterized in that, The cross-sectional area of ​​the first outlet is smaller than that of the second outlet.

6. The flushing system according to claim 1, characterized in that, It also includes a reset element that provides a force for the floating valve core to move toward the second inlet, one end of the reset element abutting against the floating valve core and the other end abutting against the inner wall of the valve cavity.

7. The flushing system according to any one of claims 1-6, characterized in that, When the water pressure in the first water supply circuit is lower than a predetermined value, the flushing system includes the following states: First working state: The control device controls the second water supply circuit to supply water and the booster device operates to perform the first brush ring cleaning; Second working state: After the first brush ring cleaning, the control device controls both the first water supply circuit and the second water supply circuit to supply water and controls the pressurization device to operate, so as to perform brush ring and spray cleaning together; Third working state: After the brush ring and spray cleaning are combined, the control device controls the second water supply circuit to supply water and controls the pressurization device to operate, so as to perform brush ring spray cleaning again; In the first working state and the third working state, the switching valve switches to the first working position; in the second working state, the switching valve switches to the second working position.

8. The flushing system according to any one of claims 1-6, characterized in that, When the water pressure in the first water supply circuit is higher than or equal to a predetermined value, the flushing system includes the following operating states: Fourth working state: The control device controls the first water supply circuit to supply water and the booster device is turned off to perform the first brush ring cleaning; Fifth working state: After the first brush ring cleaning, the control device controls both the first and second water supply circuits to supply water and controls the pressurization device to operate, performing brush ring and spray cleaning together; Sixth working state: After the brush ring and spray cleaning are completed, the control device controls the first water supply circuit to supply water and controls the pressurization device to shut down, so as to perform brush ring cleaning again; During the fourth to sixth working states, the switching valve switches to the second working position.

9. The flushing system according to any one of claims 1-6, characterized in that, It also includes a second jet water path and a control valve located in the first water supply path for controlling the opening and closing of the first water supply path; the control valve divides the first water supply path into a first water supply branch connected to the inlet of the second jet water path and a second water supply branch connected to the inlet of the switching valve. When there is a power outage, the flushing system includes the following multiple working states: In the seventh working state, the control device controls the second water supply branch to supply water for the first brush ring cleaning; In the eighth working state, after the first brush ring cleaning, the control device controls the first water supply branch to supply water for spray cleaning; In the ninth working state, after the spray washing, the control device controls the second water supply branch to supply water for another brush ring cleaning. In the seventh and ninth operating states, the switching valve switches to the second operating position.

10. A toilet, characterized in that, It includes a toilet body with a brush ring interface and a siphon jet nozzle, and a flushing system as described in any one of claims 1-9.

11. The toilet according to claim 10, characterized in that, It also includes a water tank, and the inlet of the first water supply circuit of the flushing system is connected to the municipal water source, and the inlet of the second water supply circuit of the flushing system is connected to the water tank.

12. A flushing method applied to the flushing system as described in any one of claims 1-9, comprising: When the water pressure in the first water supply circuit is detected to be lower than a predetermined value, perform the second operation, and at least one of the first and third operations: First operation: Control the water supply of the second water supply circuit and control the operation of the booster device to adjust the water pressure of the second water supply circuit to be greater than that of the first water supply circuit. Switch the switching valve to the first working position and perform the first brush ring cleaning. Second operation: After the first brush ring cleaning, control the water supply of the first water supply circuit and the water supply of the second water supply circuit and control the operation of the booster device to adjust the water pressure of the second water supply circuit to be less than or equal to the water pressure of the first water supply circuit. The switching valve switches to the second working position to perform brush ring and spray cleaning together. Third operation: After cleaning with both brush ring and spray, control the second water supply circuit to supply water and control the pressurization device to operate, adjust the water pressure of the second water supply circuit to be greater than that of the first water supply circuit, and switch the switching valve to the first working position to perform brush ring cleaning again.

13. The rinsing method according to claim 12, characterized in that, The method includes: when the water pressure of the first water supply circuit is higher than or equal to a predetermined value... Control the first water supply circuit to supply water and control the booster device to shut down. The switching valve switches to the second working position to perform the first brush ring cleaning. After the first brush ring cleaning, the second water supply circuit is controlled to supply water and the booster device is controlled to operate. The first water supply circuit is controlled to supply water, and the water pressure of the second water supply circuit is adjusted to be equal to or less than the water pressure of the first water supply circuit. The switching valve switches to the second working position to perform brush ring and spray cleaning. After the brush ring and spray cleaning are performed together, the first water supply circuit is controlled to supply water and the pressurization device is controlled to be turned off. The switching valve switches to the second working position and the brush ring cleaning is performed again.

Images